docs: def set_line_join(self, line_join):
          """Set the current :ref:`LINE_JOIN` within the cairo context.
          As with the other stroke parameters,
          the current line cap style is examined by
          :meth:`stroke`, :meth:`stroke_extents`, and :meth:`stroke_to_path`,
          but does not have any effect during path construction.
  
          The default line cap is :obj:`MITER <LINE_JOIN_MITER>`.
  
          :param line_join: A :ref:`LINE_JOIN` string.
  
          """
          cairo.cairo_set_line_join(self._pointer, line_join)
          self._check_status()